Why does my login not work!!

Ok, I can login into the vBulletin forums (obviously) but I REALLYY want to post a comment on the page that comes up when you type in mp3car.com. I wanted to express my ****edness. :P I thought I posted about this a while ago, and no one read it, or commented on it. I am kindy angry, but I won't reiterate it here. PopSci Article